JDK 9 RFR of 8178074: (ch) java/nio/channels/etc/AdaptorCloseAndInterrupt.java: add instrumentation

[Brian Burkhalter]

Please review this test-only change at your convenience.

Issue:	https://bugs.openjdk.java.net/browse/JDK-8178074
Patch:	http://cr.openjdk.java.net/~bpb/8178074/webrev.00/

The purpose of this change is to add output of certain information which might be of use in analyzing several different intermittent failures observed for this test [1, 2, 3]. The various failure modes are outlined in [4].

Thanks,

Brian

[1] https://bugs.openjdk.java.net/browse/JDK-8136899
[2] https://bugs.openjdk.java.net/browse/JDK-8150811
[3] https://bugs.openjdk.java.net/browse/JDK-8177853
[4] https://bugs.openjdk.java.net/browse/JDK-8136899?focusedCommentId=14066117&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14066117